Allantoic Cyst Prior to Transient Megacystis in Patent Urachus: A Paradoxal Association?
Tania Cristina Freitas*, Cremilda Barros, Paula Pinto, Manuela Silva, Filipe Bacelar, Patricia Silva and Helena Pereira
Obstetrics and Gynecology, Hospital Dr. Néelio Mendonca Funchal, Portugal
- *Corresponding Author:
- Tania Cristina Freitas
Hospital Dr. Néelio Mendonca Funchal, Portugal
Tel: 351964449354, 351964449354
E-mail: [email protected]
Received Date: July 02, 2014; Accepted Date: July 19, 2014; Published Date: July 22, 2014
Citation: Freitas TC, Barros C, Pinto P, Silva M, Bacelar F, et al. (2014) Allantoic Cyst Prior to Transient Megacystis in Patent Urachus: A Paradoxal Association? Gynecol Obstet (Sunnyvale) 4:230. doi: 10.4172/2161-0932.1000230
Copyright: © 2014 Freitas TC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Patent urachus is a rare umbilical anomaly with an incidence of 1 to 2.5 per 100,000 deliveries. The urachus is a thin fibromusculartubular structure that represents the intra-abdominal portion of allantois extending from umbilicus to the vertex of the bladder. Under normal conditions, the urachus is not seen in utero, since the obliteration of its lumen usually occurs at six weeks of gestational age. An anomaly in allantois involution can result in patent urachus, umbilical urachal sinus, vesicourachal diverticulum, urachal cyst, or alternating sinus and should always be included in the differential diagnosis of midabdominal cysts. Before the advent of prenatal sonography, this condition was always diagnosed in early neonatal period. The authors report a rare case of a patent urachus suspected in the first trimester ultrasound.